EP1008772A1 - Forging machine - Google Patents

Forging machine Download PDF

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Publication number
EP1008772A1
EP1008772A1 EP99890369A EP99890369A EP1008772A1 EP 1008772 A1 EP1008772 A1 EP 1008772A1 EP 99890369 A EP99890369 A EP 99890369A EP 99890369 A EP99890369 A EP 99890369A EP 1008772 A1 EP1008772 A1 EP 1008772A1
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EP
European Patent Office
Prior art keywords
forging
eccentric
connecting rod
axis
bearing body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99890369A
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German (de)
French (fr)
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EP1008772B1 (en
Inventor
Alfred Ing. Seeber
Gottfried Ing. Blaimschein
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GFM Beteiligungs und Management GmbH and Co KG
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GFM Beteiligungs und Management GmbH and Co KG
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Application filed by GFM Beteiligungs und Management GmbH and Co KG filed Critical GFM Beteiligungs und Management GmbH and Co KG
Priority to AT99890369T priority Critical patent/ATE267965T1/en
Publication of EP1008772A1 publication Critical patent/EP1008772A1/en
Application granted granted Critical
Publication of EP1008772B1 publication Critical patent/EP1008772B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B1/00Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B1/00Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/263Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks work stroke adjustment means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00Shafts; Axles; Cranks; Eccentrics
    • F16C3/04Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/22Cranks; Eccentrics
    • F16C3/28Adjustable cranks or eccentrics

Definitions

  • the invention relates to a forging machine with eccentric Forged connecting rods that are radial to the eccentric shaft axis in a forging box are guided in a stroke-movable manner and are connected to the drive connection on the eccentric End of a connecting rod head with a sliding surface for non-rotatable sliding interaction with a bearing body rotatably seated on the eccentric.
  • the forged connecting rods for adjusting the stroke position have also already been proposed to be assembled from two screw-adjustable parts, one of which is non-rotatable relative to the forging box and the other others are rotatably guided and the rotatable part with a rotary drive is connected so that by twisting the rotatable Partly because of the mutual screwing of the parts, a change in length of the forged connecting rod and thus a stroke position adjustment occurs.
  • this stroke position adjustment device still remains quite complex and affects the resilience of the connecting rods due to their division.
  • the invention is therefore based on the object of a forging machine to create the kind described above, which is characterized by its particularly simple and robust stroke position adjustment.
  • the invention solves this problem in that the sliding surface of the connecting rod head one to that determined by the eccentric shaft axis and the connecting rod axis Axial plane forms normal and slanted to the eccentric shaft axis and the bearing body forming a corresponding inclined surface over a Adjustment drive relative to the motionally supported in the eccentric shaft axis direction
  • Connecting rod is arranged adjustable.
  • Bearing body and connecting rod act therefore together like a wedge gear, so that an axial displacement of the Bearing body due to the resulting relative movement between the inclined surfaces and the slide of the connecting rod head to a displacement of the forged connecting rod in the connecting rod axis direction and the desired stroke position adjustment results.
  • the bearing body serves at the same time for drive and movement connection between eccentric shaft and forged connecting rod, what a compact, heavy-duty, yet low-cost construction allowed.
  • Suitable adjustment drives could be used directly for sliding adjustment of the bearing bodies attack on the bearing bodies and these against the connecting rod and the Move eccentric. However, it is expedient if the bearing body is non-displaceable sits on the eccentric and the adjustment drive on the axially displaceable Eccentric shaft attacks, which is cheaper for the actuator Installation conditions result.
  • the stroke position adjustment similar to the wedge gear mechanism according to the invention can be done with use all eccentric forged connecting rods, regardless of whether the connecting rod head encloses an eccentric or the bearing body, it according to the AT 370.351 B a one-sided coupling between the connecting rod head and a guide rail of the bearing body, or according to EP 0 667 197 A, there is only one there is a positive connection between the connecting rod head and the bearing body.
  • the bearing body can advantageously be in the manner of a sliding block with lateral movement play in the one guide insert the connecting rod head, whereby the bearing body serves as a sliding block of the cross loop and in a rational way performs a double function.
  • the stroke position adjustment device is not only suitable for Forging machines with upright forging box, but also for forging machines, which are used as rotary kneaders, the Forging box around a forging axis parallel to the eccentric shaft axes rotatably and driven in a machine frame. Particularly advantageous it is when there is a common adjustment drive for all eccentric shafts It is provided that a screw drive from a forge box Coaxial to the forge axis rotatably, but slidably mounted adjusting nut and a drivable ring gear meshing with the adjusting nut, wherein the adjusting nut on the eccentric shafts can be rotated, but does not move Has driver. By turning the ring gear accordingly the adjusting nut is axially displaced and can be moved by this the drivers also simultaneously shift the eccentric shafts, which is for everyone Connecting rod means synchronous stroke position adjustment.
  • a forging machine 1 consists of a machine frame 2 in which a forging axis A an annular forging box 3 rotatable and driven supports, the forging box 3 via a drive wheel 4 only indicated drive can be rotated.
  • the blacksmith box 3 has radial recesses 5 for counteracting and at the same time Forging box rotation forging dies 6 that can be moved on the workpiece side equipped with a forging tool 7 and on the workpiece facing away Side are equipped with an eccentric drive 8 as a lifting drive.
  • the Eccentric drive 8 comprises the forging dies 6 assigned in ring walls 9 of the forging box 3 mounted eccentric shafts 10 with eccentrics 11, and the Forging punches 6 form a connecting rod head 12 at the end facing the eccentric, which a receptacle for the rotationally fixed use of a rotatably seated on the eccentric 11 Bearing body 13 has.
  • the forging stamps 6 are in swivel bearings 14 stroke and swivel movable so that the eccentric rotation Forging dies 6 and thus the forging tools 7 a lifting movement radial to the forging axis A and at the same time a swiveling movement with a in a transverse plane to the forging axis A is forced become.
  • a planetary gear 15 from a Outer periphery of the forging box 3 rotatable and for example via a pulley 16 drivably mounted central wheel 17 and each of the eccentric shafts 10 assigned planet wheels 18 are provided.
  • Each forging punch 6 is equipped with a stroke position adjustment device 19, the one formed by sliding surfaces 20 of the receiving end of the connecting rod 12, to that determined by the eccentric shaft axis E and the connecting rod axis P.
  • Slideway G and the corresponding inclined surfaces 21 forming the bearing body 13 exists.
  • the bearing body 13 is seated on the eccentric 11 so that it cannot move and is on the eccentric shaft 10 and an attacking on the eccentric shaft 10
  • Adjustment drive 22 arranged so that it can be adjusted by actuation of the adjustment drive to a relative movement between the bearing body 13 and slideway G of the guide stops 23 in motion
  • Eccentric shaft axis supporting connecting rod 6 comes. This relative movement causes a change in position of the forged connecting rods in the sense of a wedge gear 6 in the direction of the connecting rod axis P, which is the desired stroke position adjustment brings with it.
  • the adjustment drive 22 is a screw drive from a coaxial on the forging box 3 to the forging axis A rotatably but displaceably mounted adjusting nut 24 and a drivable ring gear 25 meshing with the adjusting nut 24, wherein the adjusting nut 24 has driver 26, which is rotatable but fixed engage on the end of the eccentric shafts 10 facing away from the planet gears 18.
  • a rotation of the toothed ring 25 thus results in a displacement movement the adjusting nut 24 and thus an axial sliding adjustment of the eccentric shafts 10, so that there is a stroke position adjustment both when stationary and can be reached even when the machine is working.
  • FIGS. 5 and 6 is another Similar forging machine 1, the same parts again with the same Reference numerals are provided.
  • the forge box 3 is stationary here arranged, and between the connecting rod 12 and the sliding block-like bearing body 13 there is only a non-positive connection, for which the in straight guides 30, 31 seated forged connecting rods 6 via compression springs 32 against the bearing body 13 pressurized and the sliding surfaces 20 against the inclined surfaces 21 are pressed so that the eccentric rotation on the interaction of Bearing body 13 and connecting rod head 12 causes the lifting movement of the forged connecting rods.
  • the stroke position is also adjusted by means of a stroke position adjustment device 19, which is formed by the sliding surface 20 of the connecting rod heads inclined slideway G and the associated inclined surface 21 of the bearing body 13 includes.
  • each of the eccentric shafts 10 assigned individual adjustment drives 22 via a screw drive 33 and rotatable but axially immovable at the eccentric shaft ends attacking driver 34 axially shift the eccentric shafts 10 and thus the stroke position of the forging stamp 6 in the required sense change.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Forging (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

The side face of the rod (6) head (12) forms a slide path (G) at right-angles to the axial plane defined by camshaft and rod axes (E and P) and at an angle to the camshaft axis. The strike face of the bearing (13) rotating on the camshaft (10) adjusts slidably relative to the axially supported rod off drive (22) serving all camshafts. It generates a screwing motion using an adjuster nut (24) non rotatably and slidably carried coaxial to the forging axis (A). A gear ring (25) meshing with the specified nut is fitted with drivers (26). The drive acts on the camshaft and the bearing, set slidably on cam (11), is designed as a slide ring with cross-play to take the guide for the rod head.

Description

Die Erfindung bezieht sich auf eine Schmiedemaschine mit exzentergetriebenen Schmiedepleueln, die radial zur Exzenterwellenachse in einem Schmiedekasten hubbewegbar geführt sind und zur Antriebsverbindung am exzenterzugewandten Ende einen Pleuelkopf mit einer Gleitfläche zum drehfest gleitenden Zusammenwirken mit einem drehbar am Exzenter sitzenden Lagerkörper aufweisen.The invention relates to a forging machine with eccentric Forged connecting rods that are radial to the eccentric shaft axis in a forging box are guided in a stroke-movable manner and are connected to the drive connection on the eccentric End of a connecting rod head with a sliding surface for non-rotatable sliding interaction with a bearing body rotatably seated on the eccentric.

Schmiedemaschinen mit exzentergetriebenen Schmiedepleueln haben sich in den verschiedensten Ausführungen bereits bestens bewährt, wobei allerdings zur Hublagenverstellung der Schmiedepleuel spezielle Verstellgehäuse für die Exzenterwellenlagerung vorzusehen sind, wodurch das Maschinengestell wegen der erforderlichen Lageraugen in seiner Steifigkeit geschwächt wird und auf Grund der Verlagerung der Exzenterwellenmitte beim Verstellen ein entsprechender, diesen Versatz ausgleichender Exzenterwellenantrieb erforderlich ist. Es wurde auch schon vorgeschlagen, die Schmiedepleuel zur Hublagenverstellung aus zwei schraubverstellbar miteinander verbundenen Teilen zusammenzusetzen, von denen der eine gegenüber dem Schmiedekasten drehfest und der andere verdrehbar geführt werden und der verdrehbare Teil mit einem Drehantrieb in Verbindung steht, so daß durch eine Verdrehung des verdrehbaren Teils wegen der gegenseitigen Verschraubung der Teile eine Längenänderung des Schmiedepleuels und damit eine Hublagenverstellung zustande kommt. Auch diese Hublagenverstelleinrichtung bleibt allerdings noch recht aufwendig und beeinträchtigt wegen der Teilung der Pleuel deren Belastbarkeit. Forging machines with eccentric forged connecting rods have become popular the most varied of designs have already been tried and tested, although for Stroke adjustment of the forged connecting rods special adjustment housing for the eccentric shaft bearing are to be provided, whereby the machine frame because of the required bearing eyes is weakened in its rigidity and on Due to the shifting of the eccentric shaft center when adjusting a corresponding, this offset compensating eccentric shaft drive is required. The forged connecting rods for adjusting the stroke position have also already been proposed to be assembled from two screw-adjustable parts, one of which is non-rotatable relative to the forging box and the other others are rotatably guided and the rotatable part with a rotary drive is connected so that by twisting the rotatable Partly because of the mutual screwing of the parts, a change in length of the forged connecting rod and thus a stroke position adjustment occurs. However, this stroke position adjustment device still remains quite complex and affects the resilience of the connecting rods due to their division.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Schmiedemaschine der eingangs geschilderten Art zu schaffen, die sich durch ihre besonders einfache und robuste Hublagenverstelleinrichtung auszeichnet.The invention is therefore based on the object of a forging machine to create the kind described above, which is characterized by its particularly simple and robust stroke position adjustment.

Die Erfindung löst diese Aufgabe dadurch, daß die Gleitfläche des Pleuelkopfes eine zu der durch die Exzenterwellenachse und die Pleuelachse bestimmten Axialebene normale und zur Exzenterwellenachse schräggerichtete Gleitbahn bildet und der eine entsprechende Schrägfläche bildende Lagerkörper über einen Verstellantrieb relativ zum in Exzenterwellenachsrichtung bewegungsfest abgestützten Pleuel schiebeverstellbar angeordnet ist. Lagerkörper und Pleuel wirken daher wie ein Keilgetriebe zusammen, so daß eine Axialverschiebung des Lagerkörpers auf Grund der dadurch entstehenden Relativbewegung zwischen dessen Schrägflächen und der Gleitbahn des Pleuelkopfes zu einer Verschiebung des Schmiedepleuels in Pleuelachsrichtung führt und sich zwangsweise die gewünschte Hublagenverstellung ergibt. Der Lagerkörper dient dabei gleichzeitig zur Antriebs- und Bewegungsverbindung zwischen Exzenterwelle und Schmiedepleuel, was eine kompakte, hochbelastbare und dennoch aufwandsarme Konstruktion erlaubt.The invention solves this problem in that the sliding surface of the connecting rod head one to that determined by the eccentric shaft axis and the connecting rod axis Axial plane forms normal and slanted to the eccentric shaft axis and the bearing body forming a corresponding inclined surface over a Adjustment drive relative to the motionally supported in the eccentric shaft axis direction Connecting rod is arranged adjustable. Bearing body and connecting rod act therefore together like a wedge gear, so that an axial displacement of the Bearing body due to the resulting relative movement between the inclined surfaces and the slide of the connecting rod head to a displacement of the forged connecting rod in the connecting rod axis direction and the desired stroke position adjustment results. The bearing body serves at the same time for drive and movement connection between eccentric shaft and forged connecting rod, what a compact, heavy-duty, yet low-cost construction allowed.

Zur Schiebeverstellung der Lagerkörper könnten geeignete Verstellantriebe direkt an den Lagerkörpern angreifen und diese gegenüber dem Pleuel und dem Exzenter verschieben. Zweckmäßig ist es aber, wenn der Lagerkörper verschiebefest am Exzenter sitzt und der Verstellantrieb an der axial verschiebbar gelagerten Exzenterwelle angreift, wodurch sich für den Verstellantrieb günstigere Einbauverhältnisse ergeben.Suitable adjustment drives could be used directly for sliding adjustment of the bearing bodies attack on the bearing bodies and these against the connecting rod and the Move eccentric. However, it is expedient if the bearing body is non-displaceable sits on the eccentric and the adjustment drive on the axially displaceable Eccentric shaft attacks, which is cheaper for the actuator Installation conditions result.

Die erfindungsgemäße keilgetriebeähnliche Hublagenverstellung läßt sich bei allen exzentergetriebenen Schmiedepleueln anwenden, unabhängig davon, ob der Pleuelkopf einen Exzenter bzw. den Lagerkörper umschließt, es gemäß der AT 370.351 B eine einseitige Koppelung zwischen Pleuelkopf und einer Führungsschiene des Lagerkörpers gibt oder gemäß der EP 0 667 197 A nur eine kraftschlüssige Verbindung zwischen Pleuelkopf und Lagerkörper vorhanden ist. Wirken zur Antriebsverbindung Pleuelkopf und ein am Exzenter sitzender Gleitstein in Art einer Kreuzschleife zusammen, läßt sich vorteilhafterweise der Lagerkörper in Art eines Gleitsteines mit Querbewegungsspiel in der eine Kulissenführung bildenden Aufnahme des Pleuelkopfes einsetzen, wodurch der Lagerkörper gleichzeitig als Gleitstein der Kreuzschleife dient und auf rationelle Weise eine Doppelfunktion übernimmt.The stroke position adjustment similar to the wedge gear mechanism according to the invention can be done with use all eccentric forged connecting rods, regardless of whether the connecting rod head encloses an eccentric or the bearing body, it according to the AT 370.351 B a one-sided coupling between the connecting rod head and a guide rail of the bearing body, or according to EP 0 667 197 A, there is only one there is a positive connection between the connecting rod head and the bearing body. Act as connecting rod end and a sliding block on the eccentric together in the manner of a cross loop, the bearing body can advantageously be in the manner of a sliding block with lateral movement play in the one guide insert the connecting rod head, whereby the bearing body serves as a sliding block of the cross loop and in a rational way performs a double function.

Die erfindungsgemäße Hublagenverstelleinrichtung eignet sich nicht nur für Schmiedemaschinen mit stehendem Schmiedekasten, sondern auch für Schmiedemaschinen, die als Rundknetmaschinen Verwendung finden, wobei der Schmiedekasten um eine zu den Exzenterwellenachsen parallele Schmiedeachse dreh- und antreibbar in einem Maschinengestell lagert. Besondern vorteilhaft ist es dann, wenn für alle Exzenterwellen ein gemeinsamer Verstellantrieb vorgesehen ist, der einen Schraubentrieb aus einer am Schmiedekasten koaxial zur Schmiedeachse drehfest, aber verschiebbar gelagerten Stellmutter und einem mit der Stellmutter kämmenden antreibbaren Zahnkranz umfaßt, wobei die Stellmutter an den Exzenterwellen verdrehbar, aber verschiebefest angreifende Mitnehmer aufweist. Durch ein entsprechendes Drehen des Zahnkranzes wird so die Stellmutter axial verschoben und über diese Verschiebung können die Mitnehmer gleichzeitig auch die Exzenterwellen verschieben, was für alle Pleuel eine synchrone Hublagenverstellung bedeutet.The stroke position adjustment device according to the invention is not only suitable for Forging machines with upright forging box, but also for forging machines, which are used as rotary kneaders, the Forging box around a forging axis parallel to the eccentric shaft axes rotatably and driven in a machine frame. Particularly advantageous it is when there is a common adjustment drive for all eccentric shafts It is provided that a screw drive from a forge box Coaxial to the forge axis rotatably, but slidably mounted adjusting nut and a drivable ring gear meshing with the adjusting nut, wherein the adjusting nut on the eccentric shafts can be rotated, but does not move Has driver. By turning the ring gear accordingly the adjusting nut is axially displaced and can be moved by this the drivers also simultaneously shift the eccentric shafts, which is for everyone Connecting rod means synchronous stroke position adjustment.

In der Zeichnung ist der Erfindungsgegenstand rein schematisch veranschaulicht, und zwar zeigen

Fig. 1 und 2
eine erfindungsgemäße Schmiedemaschine im Axialschnitt nach der Linie I-I der Fig. 2 bzw. im Querschnitt nach der Linie II-II der Fig. 1 kleineren Maßstabes,
Fig. 3 und 4
ein anderes Ausführungsbeispiel einer erfindungsgemäßen Schmiedemaschine im Axialschnitt nach der Linie III-III der Fig. 4 bzw. im Querschnitt nach der Linie IV-IV der Fig. 3 kleineren Maßstabes sowie
Fig. 5 und 6
ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Schmiedemaschine im Axialschnitt nach der Linie V-V der Fig. 6 bzw. im Querschnitt nach der Linie VI-VI der Fig. 5 kleineren Maßstabes.
In the drawing, the subject matter of the invention is illustrated purely schematically, namely show
1 and 2
2 a forging machine according to the invention in axial section along the line II of FIG. 2 or in a cross section along the line II-II of FIG. 1,
3 and 4
another embodiment of a forging machine according to the invention in axial section along the line III-III of FIG. 4 or in cross section along the line IV-IV of FIG. 3 on a smaller scale and
5 and 6
a further embodiment of a forging machine according to the invention in axial section along the line VV of FIG. 6 or in cross section along the line VI-VI of FIG. 5 on a smaller scale.

Eine Schmiedemaschine 1 besteht aus einem Maschinengestell 2, in dem um eine Schmiedeachse A ein ringförmiger Schmiedekasten 3 dreh- und antreibbar lagert, wobei der Schmiedekasten 3 über einen lediglich mit einem Antriebsrad 4 angedeuteten Antrieb in Drehung versetzt werden kann. Der Schmiedekasten 3 weist radiale Ausnehmungen 5 für gegeneinander wirkende und bei gleichzeitiger Schmiedekastendrehung hubbewegbare Schmiedestempel 6 auf, die werkstückseitig mit einem Schmiedewerkzeug 7 bestückt und an der werkstückabgewandten Seite mit einem Exzenterantrieb 8 als Hubantrieb ausgestattet sind. Der Exzenterantrieb 8 umfaßt den Schmiedestempeln 6 zugeordnete, in Ringwänden 9 des Schmiedekastens 3 gelagerte Exzenterwellen 10 mit Exzentern 11, und die Schmiedestempel 6 bilden am exzenterzugewandten Ende einen Pleuelkopf 12, der eine Aufnahme zum drehfesten Einsatz eines drehbar am Exzenter 11 sitzenden Lagerkörpers 13 aufweist. Die Schmiedestempel 6 werden in Schwenklagern 14 hub- und schwenkbewegbar geführt, so daß bei Exzenterdrehung den Schmiedestempeln 6 und damit den Schmiedewerkzeugen 7 eine Hubbewegung radial zur Schmiedeachse A und gleichzeitig eine Schwenkbewegung mit einer in einer Querebene zur Schmiedeachse A liegenden Bewegungsrichtung aufgezwungen werden.A forging machine 1 consists of a machine frame 2 in which a forging axis A an annular forging box 3 rotatable and driven supports, the forging box 3 via a drive wheel 4 only indicated drive can be rotated. The blacksmith box 3 has radial recesses 5 for counteracting and at the same time Forging box rotation forging dies 6 that can be moved on the workpiece side equipped with a forging tool 7 and on the workpiece facing away Side are equipped with an eccentric drive 8 as a lifting drive. The Eccentric drive 8 comprises the forging dies 6 assigned in ring walls 9 of the forging box 3 mounted eccentric shafts 10 with eccentrics 11, and the Forging punches 6 form a connecting rod head 12 at the end facing the eccentric, which a receptacle for the rotationally fixed use of a rotatably seated on the eccentric 11 Bearing body 13 has. The forging stamps 6 are in swivel bearings 14 stroke and swivel movable so that the eccentric rotation Forging dies 6 and thus the forging tools 7 a lifting movement radial to the forging axis A and at the same time a swiveling movement with a in a transverse plane to the forging axis A is forced become.

Zum Antrieb der Exzenterwellen 10 ist ein Umlaufgetriebe 15 aus einem am Außenumfang des Schmiedekastens 3 drehbar und beispielsweise über eine Riemenscheibe 16 antreibbar gelagerten Zentralrad 17 und jeweils den Exzenterwellen 10 zugeordneten Umlaufrädern 18 vorgesehen.To drive the eccentric shafts 10 is a planetary gear 15 from a Outer periphery of the forging box 3 rotatable and for example via a pulley 16 drivably mounted central wheel 17 and each of the eccentric shafts 10 assigned planet wheels 18 are provided.

Jeder Schmiedestempel 6 ist mit einer Hublagenverstelleinrichtung 19 ausgestattet, die aus einer von Gleitflächen 20 der Aufnahme des Pleuelkopfes 12 gebildeten, zu der durch die Exzenterwellenachse E und der Pleuelachse P bestimmten Axialebene normalen und zur Exzenterwellenachse E schräggerichteten Gleitbahn G und dem entsprechende Schrägflächen 21 bildenden Lagerkörper 13 besteht. Der Lagerkörper 13 sitzt dabei verschiebefest am Exzenter 11 und ist über die Exzenterwelle 10 und einen an der Exzenterwelle 10 angreifenden Verstellantrieb 22 schiebeverstellbar angeordnet, so daß es durch die Betätigung des Verstellantriebes zu einer Relativbewegung zwischen Lagerkörper 13 und Gleitbahn G des sich über Führungsanschläge 23 bewegungsfest in Exzenterwellenachsrichtung abstützenden Pleuels 6 kommt. Diese Relativbewegung bewirkt im Sinne eines Keilgetriebes eine Lageveränderung der Schmiedepleuel 6 in Richtung der Pleuelachse P, was die gewünschte Hublagenverstellung mit sich bringt.Each forging punch 6 is equipped with a stroke position adjustment device 19, the one formed by sliding surfaces 20 of the receiving end of the connecting rod 12, to that determined by the eccentric shaft axis E and the connecting rod axis P. Axial plane normal and oblique to the eccentric shaft axis E. Slideway G and the corresponding inclined surfaces 21 forming the bearing body 13 exists. The bearing body 13 is seated on the eccentric 11 so that it cannot move and is on the eccentric shaft 10 and an attacking on the eccentric shaft 10 Adjustment drive 22 arranged so that it can be adjusted by actuation of the adjustment drive to a relative movement between the bearing body 13 and slideway G of the guide stops 23 in motion Eccentric shaft axis supporting connecting rod 6 comes. This relative movement causes a change in position of the forged connecting rods in the sense of a wedge gear 6 in the direction of the connecting rod axis P, which is the desired stroke position adjustment brings with it.

Gemäß den Ausführungsbeispielen nach Fig. 1 und 2 bzw. Fig. 3 und 4 umfaßt der Verstellantrieb 22 einen Schraubentrieb aus einer am Schmiedekasten 3 koaxial zur Schmiedeachse A drehfest, aber verschiebbar gelagerten Stellmutter 24 und einen mit der Stellmutter 24 kämmenden antreibbaren Zahnkranz 25, wobei die Stellmutter 24 Mitnehmer 26 aufweist, die verdrehbar, aber verschiebefest am den Umlaufrädern 18 abgewandten Ende der Exzenterwellen 10 angreifen. Durch eine Verdrehung des Zahnkranzes 25 ergibt sich somit eine Verschiebebewegung der Stellmutter 24 und damit eine axiale Schiebeverstellung der Exzenterwellen 10, so daß sich eine Hublagenverstellung sowohl bei stillstehender als auch bei arbeitender Maschine erreichen läßt.According to the exemplary embodiments according to FIGS. 1 and 2 or FIGS. 3 and 4 the adjustment drive 22 is a screw drive from a coaxial on the forging box 3 to the forging axis A rotatably but displaceably mounted adjusting nut 24 and a drivable ring gear 25 meshing with the adjusting nut 24, wherein the adjusting nut 24 has driver 26, which is rotatable but fixed engage on the end of the eccentric shafts 10 facing away from the planet gears 18. A rotation of the toothed ring 25 thus results in a displacement movement the adjusting nut 24 and thus an axial sliding adjustment of the eccentric shafts 10, so that there is a stroke position adjustment both when stationary and can be reached even when the machine is working.

Fig. 3 und 4 veranschaulichen eine etwas abgeänderte Schmiedemaschine 1, wobei gleichbleibende Teile auch mit gleichen Bezugszeichen versehen sind. Zum Unterschied vom Ausführungsbeispiel nach Fig. 1 und 2, bei dem die Schmiedepleuel pleuelartig an den Exzentern angelenkt sind, gibt es beim Ausführungsbeispiel nach Fig. 3 und 4 zwischen den Exzentern 11 und dem Pleuelkopf 12 der Schmiedepleuel 6 eine Antriebsverbindung in Form einer Kreuzschleife, indem der Pleuelkopf 12 als Aufnahme für den Lagerkörper 13 eine Kulissenführung 27 bildet, in die der Lagerkörper 13 als Gleitstein 28 mit Querbewegungsspiel 29 eingesetzt ist. Dadurch wird die Exzenterbewegung in eine reine Hubbewegung umgewandelt, wobei Geradführungen 30, 31 für die Längsführung der Schmiedepleuel 6 im Schmiedekasten 3 sorgen. Auch hier ist aber zur Hublagenverstellung eine Hublagenverstelleinrichtung 19 mit einer aus den Gleitflächen 20 des Pleuelkopfes gebildeten, entsprechend schräg ausgerichteten Gleitbahn G und dieser zugeordneten Schrägflächen 21 des Lagerkörpers 13 vorgesehen, welche Lagerkörper 13 über den Verstellantrieb 22 zusammen mit den Exzenterwellen 10 relativ zu den Schmiedepleueln 6 in Exzenterwellenachsrichtung schiebeverstellbar sind, so daß wiederum unabhängig von der Drehung des Maschinenkastens und/oder der Exzenterwellen die Hublage der Pleuel 6 und damit der Schmiedewerkzeuge 7 wunschgemäß verstellt werden kann.3 and 4 illustrate a slightly modified forging machine 1, constant parts are also provided with the same reference numerals. In contrast to the embodiment of FIGS. 1 and 2, in which the Forged connecting rods are articulated on the eccentric rods, there is in the embodiment 3 and 4 between the eccentrics 11 and the connecting rod head 12 the forged connecting rod 6 a drive connection in the form of a cross loop, by the connecting rod 12 as a receptacle for the bearing body 13 Link guide 27 forms, in which the bearing body 13 as a sliding block 28 with transverse movement play 29 is inserted. This turns the eccentric movement into one pure lifting movement converted, with straight guides 30, 31 for the longitudinal guide the forged connecting rod 6 in the forged box 3. But here too for stroke position adjustment a stroke position adjustment device 19 with one of the Sliding surfaces 20 of the connecting rod head formed, correspondingly obliquely aligned Slideway G and inclined surfaces 21 of the bearing body 13 assigned to it provided which bearing body 13 together with the adjusting drive 22 the eccentric shafts 10 relative to the forged connecting rods 6 in the direction of the eccentric shaft are adjustable, so that again regardless of the rotation of the machine box and / or the eccentric shafts the stroke position of the connecting rods 6 and so that the forging tools 7 can be adjusted as desired.

Beim Ausführungsbeispiel nach Fig. 5 und 6 handelt es sich um eine weitere ähnliche Schmiedemaschine 1, wobei gleichbleibende Teile wiederum mit gleichen Bezugszeichen versehen sind. Der Schmiedekasten 3 ist hier stillstehend angeordnet, und zwischen Pleuelkopf 12 und dem gleitsteinähnlichen Lagerkörper 13 gibt es lediglich eine kraftschlüssige Verbindung, wozu die in Geradführungen 30, 31 sitzenden Schmiedepleuel 6 über Druckfedern 32 gegen die Lagerkörper 13 druckbeaufschlagt und die Gleitflächen 20 gegen die Schrägflächen 21 gedrückt werden, so daß die Exzenterdrehung über das Zusammenspiel von Lagerkörper 13 und Pleuelkopf 12 die Hubbewegung der Schmiedepleuel bewirkt. Die Hublagenverstellung erfolgt aber ebenfalls mittels einer Hublagenverstelleinrichtung 19, die eine von der Gleitfläche 20 der Pleuelköpfe gebildete schräggerichtete Gleitbahn G und die zugehörende Schrägfläche 21 der Lagerkörper 13 umfaßt. Zur Schiebeverstellung der Lagerkörper 13 gibt es allerdings den Exzenterwellen 10 jeweils zugeordnete einzelne Verstellantriebe 22, die über einen Schraubentrieb 33 und drehbar, aber axial unverschiebbar an den Exzenterwellenenden angreifende Mitnehmer 34 die Exzenterwellen 10 axial verschieben und damit die Hublage der Schmiedestempel 6 im erforderlichen Sinne verändern.The embodiment of FIGS. 5 and 6 is another Similar forging machine 1, the same parts again with the same Reference numerals are provided. The forge box 3 is stationary here arranged, and between the connecting rod 12 and the sliding block-like bearing body 13 there is only a non-positive connection, for which the in straight guides 30, 31 seated forged connecting rods 6 via compression springs 32 against the bearing body 13 pressurized and the sliding surfaces 20 against the inclined surfaces 21 are pressed so that the eccentric rotation on the interaction of Bearing body 13 and connecting rod head 12 causes the lifting movement of the forged connecting rods. The stroke position is also adjusted by means of a stroke position adjustment device 19, which is formed by the sliding surface 20 of the connecting rod heads inclined slideway G and the associated inclined surface 21 of the bearing body 13 includes. There is, however, a sliding adjustment of the bearing body 13 each of the eccentric shafts 10 assigned individual adjustment drives 22 via a screw drive 33 and rotatable but axially immovable at the eccentric shaft ends attacking driver 34 axially shift the eccentric shafts 10 and thus the stroke position of the forging stamp 6 in the required sense change.

Claims (5)

Schmiedemaschine (1) mit exzentergetriebenen Schmiedepleueln (6), die radial zur Exzenterwellenachse (E) in einem Schmiedekasten (3) hubbewegbar geführt sind und zur Antriebsverbindung am exzenterzugewandten Ende einen Pleuelkopf (12) mit einer Gleitfläche zum drehfest gleitenden Zusammenwirken mit einem drehbar am Exzenter (11) sitzenden Lagerkörper (13) aufweisen, dadurch gekennzeichnet, daß die Gleitfläche (2o) des Pleuelkopfes (12) eine zu der durch die Exzenterwellenachse (E) und die Pleuelachse (P) bestimmten Axialebene normale und zur Exzenterwellenachse (E) schräggerichtete Gleitbahn (G) bildet und der eine entsprechende Schrägfläche (21) bildende Lagerkörper (13) über einen Verstellantrieb (22) relativ zum in Exzenterwellenachsrichtung bewegungsfest abgestützten Pleuel (6) schiebeverstellbar angeordnet ist.Forging machine (1) with eccentric forged connecting rods (6), the Radially movable to the eccentric shaft axis (E) in a forging box (3) are guided and a drive connection at the eccentric end Connecting rod head (12) with a sliding surface for non-rotatable sliding interaction with a bearing body (13) rotatable on the eccentric (11), thereby characterized in that the sliding surface (2o) of the connecting rod head (12) one to the determined by the eccentric shaft axis (E) and the connecting rod axis (P) axial plane normal slideway (G) that is oblique to the eccentric shaft axis (E) forms and the bearing body (13) forming a corresponding inclined surface (21) via an adjusting drive (22) relative to the movement in the direction of the eccentric shaft axis supported connecting rod (6) is arranged adjustable. Schmiedemaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Lagerkörper (13) verschiebefest am Exzenter (11) sitzt und der Verstellantrieb (22) an der axial verschiebbar gelagerten Exzenterwelle (10) angreift.Forging machine according to claim 1, characterized in that the Bearing body (13) is fixed on the eccentric (11) and the adjustment drive (22) engages on the axially displaceably mounted eccentric shaft (10). Schmiedemaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Lagerkörper (13) in Art eines Gleitsteines (28) mit Querbewegungsspiel (29) in der eine Kulissenführung (27) bildenden Aufnahme des Pleuelkopfes (12) eingesetzt ist.Forging machine according to claim 1 or 2, characterized in that that the bearing body (13) in the manner of a sliding block (28) with transverse movement play (29) in the connection of the connecting rod head (12) forming a link guide (27) is inserted. Schmiedemaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Schmiedekasten (3) um eine zu den Exzenterwellenachsen (E) parallele Schmiedeachse (A) dreh- und antreibbar in einem Maschinengestell (2) lagert. Forging machine according to one of claims 1 to 3, characterized in that that the forging box (3) about one to the eccentric shaft axes (E) parallel forging axis (A) can be rotated and driven in a machine frame (2) stores. Schmiedemaschine nach Anspruch 4, dadurch gekennzeichnet, daß für alle Exzenterwellen (10) ein gemeinsamer Verstellantrieb (22) vorgesehen ist, der einen Schraubentrieb aus einer am Schmiedekasten (3) koaxial zur Schmiedeachse (A) drehfest, aber verschiebbar gelagerten Stellmutter (24) und einem mit der Stellmutter (24) kämmenden antreibbaren Zahnkranz (25) umfaßt, wobei die Stellmutter (24) an den Exzenterwellen (10) verdrehbar, aber verschiebefest angreifende Mitnehmer (26) aufweist.Forging machine according to claim 4, characterized in that for a common adjustment drive (22) is provided for all eccentric shafts (10), the one screw drive from one on the forging box (3) coaxial to the forging axis (A) rotatably but slidably mounted adjusting nut (24) and one with the adjusting nut (24) meshing drivable ring gear (25), wherein the adjusting nut (24) on the eccentric shafts (10) can be turned, but is fixed against displacement attacking driver (26).
EP99890369A 1998-12-09 1999-11-22 Forging machine Expired - Lifetime EP1008772B1 (en)

Priority Applications (1)

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AT99890369T ATE267965T1 (en) 1998-12-09 1999-11-22 FORGING MACHINE

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AT206098 1998-12-09
AT0206098A AT407966B (en) 1998-12-09 1998-12-09 FORGING MACHINE

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EP1008772A1 true EP1008772A1 (en) 2000-06-14
EP1008772B1 EP1008772B1 (en) 2004-05-26

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JP (1) JP2000176592A (en)
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Cited By (3)

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CN103912331A (en) * 2014-03-31 2014-07-09 长城汽车股份有限公司 Variable valve timing system, engine and vehicle
CN106311947A (en) * 2015-06-22 2017-01-11 连熹 High-speed forging equipment
CN107088637A (en) * 2017-06-28 2017-08-25 太仓荣中机电科技有限公司 A kind of filature sliding block adjustment mechanism

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CN101293268B (en) * 2007-04-24 2010-06-23 湖北大地钎具实业发展有限公司 Three-cylinder hydrostatic forging machine
CN102921858A (en) * 2012-10-26 2013-02-13 无锡欧亚电梯设备有限公司 Crankshaft connecting rod assembly for forging machine tools
JP6026374B2 (en) * 2013-09-02 2016-11-16 住友重機械工業株式会社 Swing press for forging
CN106734812B (en) * 2016-12-27 2018-05-01 重庆市永川区望城机械厂 Planet carrier blank forging equipment

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CN103912331A (en) * 2014-03-31 2014-07-09 长城汽车股份有限公司 Variable valve timing system, engine and vehicle
CN106311947A (en) * 2015-06-22 2017-01-11 连熹 High-speed forging equipment
CN107088637A (en) * 2017-06-28 2017-08-25 太仓荣中机电科技有限公司 A kind of filature sliding block adjustment mechanism
CN107088637B (en) * 2017-06-28 2019-07-05 江苏宝特汽车部件有限公司 A kind of filature sliding block adjustment mechanism

Also Published As

Publication number Publication date
AT407966B (en) 2001-07-25
EP1008772B1 (en) 2004-05-26
DE59909578D1 (en) 2004-07-01
ATE267965T1 (en) 2004-06-15
ATA206098A (en) 2000-12-15
US6308552B1 (en) 2001-10-30
JP2000176592A (en) 2000-06-27

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